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SubjectRe: 2.6.25-rc6 regression - hang on resume [Bug 10319]

On Fri, 2008-04-04 at 08:31 +0200, Soeren Sonnenburg wrote:
> On Fri, 2008-04-04 at 01:22 +0200, Rafael J. Wysocki wrote:

> > Bug-Entry :
> > Subject : 2.6.25-rc6 regression - hang on resume
> > Submitter : Soeren Sonnenburg <>
> > Date : 2008-03-25 04:44 (10 days old)
> Yes. The machine resumes and display stays black using s2ram -f -p
> (blindly typing reboot etc on keyboard does what is expected). However
> display comes back on 2.6.24.

I can add that on my laptop (toshiba U305, Intel 945GM chipset), s2ram
-f -p -m which used to work ok, in X and console, in 2.6.24 stopped to
work (I tested -rc8, but I think it's like that since a long time).
Machine resumes but the screen stays off after that, although machine is
working (exactly as Soeren said).

On the other hand, now the plain "echo mem > /sys/power/state" works
perfectly, from X and console. So some of the magic vbe save/restore of
s2ram mess something up for this card.

Is it a regression for my laptop (is evidently one for Soeren)? On one
side, a "used to work" setup is broken, but it worked with userspace
hacks; now it works with the plain way, and that's clearly better.

I added on Cc: Jesse, to whom I confirmed that Intel suspend/resume was
ok on Feb, 21, [1] and suspend-devel list, because now I do not know
what to do with the whitelist I sent for s2ram for this machine...



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